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Finding the Fourth Proportional to 69,708.33, 104,562.28 and 19,788.47

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Solution

The fourth proportional to 69,708.33, 104,562.28 and 19,788.47 is: 29,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,708.33 : 104,562.28 = 19,788.47 : x
  2. Step 2: Convert to fraction form
    69,708.33/104,562.28 = 19,788.47/x
  3. Step 3: Cross multiply
    69,708.33x = 104,562.28 × 19,788.47
  4. Step 4: Simplify right side
    69,708.33x = 2,069,127,540.91
  5. Step 5: Solve for x
    x = 2,069,127,540.91/69,708.33
  6. Step 6: Final answer
    x = 29,682.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.